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County rankings · Lowest ratio

Illinois: the counties with the lowest student-to-teacher ratios

89 counties

Illinois counties ranked by the lowest county-wide student-to-teacher ratio. Counties need at least 3 schools and 1,000 students to qualify. The median ranked county is at 13.1:1. Showing ranks 51 to 89.

#CountyStateSchoolsStudentsRatio
51Randolph CountyIL133,87613.3:1
52DuPage CountyIL239138,55713.4:1
53Henry CountyIL257,72313.4:1
54Perry CountyIL82,54513.4:1
55Cook CountyIL1,271697,93413.5:1
56DeKalb CountyIL3916,32813.5:1
57Champaign CountyIL5625,91913.6:1
58Clinton CountyIL195,27813.6:1
59Lee CountyIL133,77813.6:1
60McHenry CountyIL8350,12313.6:1
61McLean CountyIL5423,75913.7:1
62Whiteside CountyIL288,44513.7:1
63Williamson CountyIL219,70013.7:1
64Woodford CountyIL206,33813.8:1
65Christian CountyIL184,74013.9:1
66Sangamon CountyIL6727,34513.9:1
67Tazewell CountyIL5218,58114.0:1
68Moultrie CountyIL61,62814.1:1
69Wabash CountyIL51,51314.1:1
70Kankakee CountyIL3716,49914.2:1
71Will CountyIL177113,00814.2:1
72Coles CountyIL135,97314.3:1
73St. Clair CountyIL8540,87914.4:1
74Adams CountyIL198,71714.5:1
75Grundy CountyIL2212,07014.6:1
76Peoria CountyIL6527,82714.6:1
77Vermilion CountyIL3311,26714.6:1
78Kane CountyIL12987,25214.7:1
79Jasper CountyIL41,19714.8:1
80Kendall CountyIL4129,77314.8:1
81Richland CountyIL42,14514.9:1
82Jersey CountyIL62,37715.0:1
83Rock Island CountyIL4821,92115.0:1
84Madison CountyIL7135,25315.1:1
85Monroe CountyIL125,00615.3:1
86Cass CountyIL82,35215.4:1
87Hamilton CountyIL41,09115.5:1
88Winnebago CountyIL8144,10316.1:1
89Macon CountyIL3414,70216.3:1

See the national lowest ratio ranking →